2(1H)-quinolinone, 3-acetyl-4-hydroxy- 3-acetyl-4-hydroxyquinolin-2(1H)-one InChI=1/C11H9NO3/c1-6(13)9-10(14)7-4-2-3-5-8(7)12-11(9)15/h2-5H,1H3,(H2,12,14,15